The blood-brain barrier is made up of
A)microglial extensions and capillary endothelial cells.
B)ependymal cells and venous blood vessels.
C)astrocyte perivascular feet and capillary endothelial cells.
D)astrocyte extensions and dural sinuses.
E)astrocyte perivascular feet and the falx cerebri.

Question

Quizplus · Accepted Answer

The blood-brain barrier is made up of astrocyte perivascular feet and capillary endothelial cells. Astrocyte perivascular feet envelop the capillaries and help to create a barrier between the circulating blood and the brain tissue. This barrier protects the delicate neural tissue by preventing the entry of harmful substances, while allowing the passage of necessary molecules such as oxygen and nutrients.

The Blood-Brain Barrier Is Made Up of